A739-B11 Cr 1.25%, Mo 0.55% Round-Bar

A739-B11 Cr 1.25%, Mo 0.55% Round-Bar
STEELMAX Steel Story

A739 에는 2가지 Grade가 있습니다.
A739 B11, A739 B22 로

Grade별 주요 합금 원소로는
A739-B11 : Cr 1.25%, Mo 0.55%

A739-B22 : Cr 2.25%, Mo 1.00% 입니다.
A739 Specification for steel bars, hot wrought

for elevated temperature or pressure-containing
suitable for fusion welding or both 용도이며

Boiler support rods. Fasteners,
Connecting rod, Bolt and nut,

Pressure vessel, Machine tools,
Multi-diameter shaft.

※ Steels for pressure vessels (압력용기용 강재 : 壓力容器用鋼材)
Steel products manufactured pressure vessels and high pressure
equipment which require strength, weldability and principally
toughness at a ordinary temperature.
They are generally used for the principal portions of
pressure vessels.

압력 용기 및 고압 설비용으로서 고온 강도, 용접성 및 주로
상온에서의 인성을 중요시하여 제조 된 강재로
보통 압력 용기의 주요 부분에 사용됩니다.

※ Steels for boilers
Steel products manufactured for boilers and pressure vessels which
require strength at a high temperature and weldability.
They are generally used for the principal portions of
boilers and pressure vessels.

보일러 및 압력용기용으로서 고온 강도, 용접성을 중요시해서
제조 된 강재로 보통, 보일러 및 압력 용기의 주요 부분에 사용됩니다.

Steel Grade		A739-B11
Chemical Composition(%)	Carbon (C)	0.05~0.20
	Manganese (Mn)	0.40~0.65
	Phosphorus (P)	0.035 max
	Sulfur (S)	0.04 max
	Silicon (Si)	0.50~0.80
	Chromium (Cr)	1.00~1.50
	Molybdenum (Mo)	0.45~0.65
Proof Stress (N/㎟)		310 min
Tensile Strength (N/㎟)		483~655
Elongation (min, %)		18
Reduction area (min, %)		45